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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef BASE_FORMAT_MACROS_H_
6 #define BASE_FORMAT_MACROS_H_
7 #pragma once
8 
9 // This file defines the format macros for some integer types.
10 
11 // To print a 64-bit value in a portable way:
12 //   int64_t value;
13 //   printf("xyz:%" PRId64, value);
14 // The "d" in the macro corresponds to %d; you can also use PRIu64 etc.
15 //
16 // For wide strings, prepend "Wide" to the macro:
17 //   int64_t value;
18 //   StringPrintf(L"xyz: %" WidePRId64, value);
19 //
20 // To print a size_t value in a portable way:
21 //   size_t size;
22 //   printf("xyz: %" PRIuS, size);
23 // The "u" in the macro corresponds to %u, and S is for "size".
24 
25 #include "build/build_config.h"
26 
27 #if defined(OS_POSIX)
28 
29 #if (defined(_INTTYPES_H) || defined(_INTTYPES_H_)) && !defined(PRId64)
30 #error "inttypes.h has already been included before this header file, but "
31 #error "without __STDC_FORMAT_MACROS defined."
32 #endif
33 
34 #if !defined(__STDC_FORMAT_MACROS)
35 #define __STDC_FORMAT_MACROS
36 #endif
37 
38 #include <inttypes.h>
39 
40 // GCC will concatenate wide and narrow strings correctly, so nothing needs to
41 // be done here.
42 #define WidePRId64 PRId64
43 #define WidePRIu64 PRIu64
44 #define WidePRIx64 PRIx64
45 
46 #if !defined(PRIuS)
47 #define PRIuS "zu"
48 #endif
49 
50 #else  // OS_WIN
51 
52 #if !defined(PRId64)
53 #define PRId64 "I64d"
54 #endif
55 
56 #if !defined(PRIu64)
57 #define PRIu64 "I64u"
58 #endif
59 
60 #if !defined(PRIx64)
61 #define PRIx64 "I64x"
62 #endif
63 
64 #define WidePRId64 L"I64d"
65 #define WidePRIu64 L"I64u"
66 #define WidePRIx64 L"I64x"
67 
68 #if !defined(PRIuS)
69 #define PRIuS "Iu"
70 #endif
71 
72 #endif
73 
74 #endif  // BASE_FORMAT_MACROS_H_
75